anyways, they normally included these transactions in the first block they mined. But here is what you can do today to keep your own transaction from getting stuck. This is exponentially less likely to occur the larger n gets. The average block time can actually be slightly shorter or longer depending on if the total hash power of the Bitcoin network is growing or shrinking. Given this we might be tempted to say a transaction is confirmed once it has been included in a block which is not the very last block in the blockchain. This lets you re-send the same transaction, but with a higher fee. For very large transactions, coin owners might want to wait for a larger number of block confirmations and most wallet software now says more precisely that a transaction is confirmed by n blocks to enable users to decide for themselves if more confirmation is needed. Ignoring this detail though, this is why 6 confirmations take about 1 hour on average. Since ViaBTC controls about seven percent of hash-power on the Bitcoin network, there is a good chance it will find a block within a couple of hours.
If the new fee is sufficient, the transaction should typically confirm within a couple of blocks. If you are in a rush, some wallets allow you to export your private keys or the private key seed, and then import them into the new wallet. The time it takes for this to happen is quite variable-sometimes confirmation may be tens of minutes and sometimes it may take over two hours, but on average it will take about an hour. Even with only 1 confirmation (accepting a transaction once it is included in the most recent block in the chain) the risk of losing it to a reorganization is low (1-2) and even then it will probably be re-included after the reorganization occurs. Based on data from the Bitcoin network, these wallets automatically include a fee that is estimated to have a transaction included in the next block, or maybe in one of the first blocks after that. You cannot cancel an unconfirmed transaction. While this was chosen somewhat arbitrarily, it is a reasonably safe value in practice as the only time this would have left users vulnerable to double-spending was the atypical March 2013 fork.
The miners who maintain the blockchain will only include this transaction if Alice has not yet transferred the coins to anybody else, so once Bob sees the transaction appear in the blockchain he can be confident that he is the new owner. For relatively small transactions (like buying coffee users might be fine with a shorter confirmation period such as one or even zero blocks. How Long Does 6 Blocks Take? Update: Since completion of this article, mining pool ViaBTC started offering a transaction accelerator. However, the block-creation (or mining) process is random and each block may take much longer or shorter. But enough of them do to probably have your transaction confirmed in one of the next blocks. Opt-In RBF is currently supported by two wallets: Electrum and, greenAddress. Try increasing the fee, if you want to have your transaction confirmed faster, the obvious solution is to include a higher fee. Now, suppose Alice signs a statement on her own computer saying she wants to transfer some coins to Bob but never sends the statement to Bob.
Whether your new transaction will be included in the very next block does depend on which miner mines that next block: not all miners support Opt-In RBF. A list of unconfirmed bitcoin transactions. For the latest on policy and regulation relating to cryptocurrencies like Bitcoin, see what we're doing to protect your right to innovate with cryptocurrencies.). I am using. I have made a bitcoin transaction.00883562 BTC to the address You can see the transaction.